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C. B. HORTON. Bucky/heat Hllller.

K Patented May 22, 1855.

Fre. 1.

l/VVNTOR N. PETERS. Photo-Lithugnphar. Waunglon. D. C.

. UNrTED STATES PATENT onirica CHASE B. HORTON, OF ELMIRVA, NEW YORK.

HULLER oF BUcKWHEA'r.

Speccaton of Letters Patent No. 12,908, dated May 22, 1855.

To all whom t may concern.'

Be it known that I, CHASE B.'I-IoRToN, of Elmira, in the county of Chemung and State of New York, have invented a new and useful Machine for I-Iulling Buckwheat; and I do hereby declare that the fol'lowing is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, (of which Figure l is a perspective and Fig. 2 an elevation and part sectional view,) and-to the letters of reference marked thereon, making part of this specicat-ion.

'Ihe nature of my invention consists in passing the grain to be operated on through hulling stones of a co-nformation peculiarly adapted to the purpose, in connection with a reverse close suction separator which completes the operation by separating the hulls, dust and cha from the hulled grain.

Fig. 9. shows the general arrangement of the parts. A

A is a vertical spindle on which the inner stone B is hung. This stone is in the form of a frustrum or truncated cone, and revolves in a stone case the inner surface of which corresponds exactly to the form of the frustrum stone. C C represents a part of this case or outer stone which is removed in the drawing to show the interior construction. rIhe spindle A has its bearing in the step E which is capable of being raised or lowered by the hand screw F for the purpose of adjusting the frustrum to the outer stone which is immovably attached to the frame of the machine and held firmly by the adjusting screws (d, d, (L) Fig. 2. The spindle is run by the band Gr from a drum wheel on the shaft to which the crank H is attached for the purpose of shewing the motion of the machine. It may be driven by any shaft within a convenient distance.

I I I is the suction-blast-pipe shewn in section. The blast is created by the fans j j j driven at a high rate of speed. The air is drawn in either at the bottom of the pipe K, or at the gage opening L, and the current carried in the direction of the arrows over the hulling stones, and downward around the fans until discharge at the eX- panded throat of the pipe.

The grain enters the stones by the spout M where it is subjected toga gradual abrasion as the grain moves downward by gravitation from the two surfaces, which are carefully adjusted to the size of the kernel so as to break and remove the hull without crushing the kernel. Under the frustrum stone is a receiving case into which the grain and chad fall together and are swept by the arms N, N, into the inclined plane or spout O, which discharges them intol the blastpipe. The peculiarity of the operation of the blast-pipe is that by its construction no air is admitted but that which is taken in below the discharge of the grain at O, not

vany or very little being taken in with the matt-ers such as chess, light grain, &c., tol

descend against the inclined plane by which they are discharged at an opening at Q, while the remaining chaff is carried out of the mouth of the separator at It. The force of the blast is increased or diminished by valves in the pipe at S, t0 adapt it to grain of greater or less gravity. A

The stones may be used either with or without -a dress, but I prefer using them without as the natural surface of stones of this construction gives that kind of abrasion which most eectually rids the grain of its hulls and leaves it in a condition to manufacture into the whitest and purest article of flour.

I am aware that conical stones have been used for the grinding o-f grains, therefore I do not claim that asmy invention, but

Vhat I do claim, and for which I desire to secure Letters Patent is,

The arrangement and combination of the fan j, y', j, j, with the suction spout, I, I, the discharge openings It, Q, and the stones B, and C, substantially in the manner and for the purposes set forth.

C. B. HORTON.

Vitnesses:

I. B. LooMis, J. FRASER. 

